Grinding-machine.



Patented Obi. 2, I900.

M 0 Dn T s N F Z 9 9 5 6 n N GRINDING MACHINE. Application filed Mar. 8,1900.)

(No Model.)

FIGLL.

WITNESSES THE scams PETERS co, r-uo'raurnu. wnsnmcrrcn, u c

UNITED STATES PATENT FFICFE.

FRED A. NYSTROM, OF COSMOPOLIS, WASHINGTON.

GRINDING-MACHINE.

$PECIFIGATION forming part of Letters Patent No. 659,092, dated October2, 1900.

Application filed March 3, 1900. Serial No. 7,187. \No model.)

To al whom it 11mg concern;

Be it known that I, FRED A. NYSTROM, a citizen of the United States, anda resident of Cosmopolis, in the county of Chehalis and State ofWashington, have invented a new and Improved Grinding-Machine, of whichthe following is a full, clear, and exact description.

The object of the invention is to provide a new and improvedgrinding-machine which is simple and durable in construction, veryeffective in operation,and more especially designed for conveniently,quickly, and accurately grinding faces of band-saw wheels to render saidfaces true to insure proper running of the band.

The invention consists of novel featuresand parts and combinations ofthe same, as will be fully described hereinafter and then pointed out inthe claims.

A practical embodiment of the invention is represented in theaccompanying drawings, forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in all thevlews.

Figure l is a perspective view of the improvement as applied. Fig, 2 isa transverse section of the same on the line 2 2 in Fig. l, and Fig. 3is a similar View of the same on the line 3 3 in Fig. 1.

The grinding device illustrated in the drawings is applied directly to aband-saw mill mounted on a suitable frame A, in which are journaled theband-saw wheels B B, over which passes a band-saw (1. Between theband-saw wheels B B is arranged a grindingmachine frame D, fulcru med ona shaft or rod E, held on the frame A and extending parallel to theshafts of the band-saw wheels B B.

In the free end of the frame D is journaled a grinding-wheel shaft F, onwhich is mounted to slide and to turn with the shaft F a grinding-wheelG, of emery or other suitable material, and adapted to engage the faceof either the band-saw wheel B or that of the band-saw wheel B to truethe faces of said wheels in the manner hereinafter more fully described.

In order to cause the grinding-wheel G to turn with the shaft F and tomove lengthwise of said shaft, the latter is provided with a key F,engaging a corresponding, groove in the hub of the grinding-wheel G. Onone face of the grinding-wheel Gis a shifting carriage G, engaged by thefork of a shifting arm H, havinga nut H, screwing on a screwrod I,mounted to turn in suitable hearings in the frame D, a crank-arm I beingon one outer end of the screw-rod I to allow the operator to turn thesaid screw-rod so as to cause the nut H, and with it the shifting arm.

mounted to swing loosely on a rod K,attached to the frame A, the rod Kextending parallel to the rod E and the shafts of the band-saw wheels BB. The lower ends of the rods J engage a cross-bar D of the frame D, andnuts J screwing on the rods J, (see Fig. 2,) engage the cross-bar at thetop and bottom IO securely fasten the cross-bar in position on the rodsJ. When the nuts J are loosened, the frame D can be swung up or down tobring the grinding-wheel G in contact with either the face of the wheelB or that of the wheel B, and when the grinding-wheel is in the desiredposition the nuts J are screwed against the top and bottom of thecross-bar D to securely fasten the frame D in position for the timebeing.

The grinding-wheel G is rotated from either the band-wheel B or B, and,as is shown in the drawings, the said wheel G is rotated from the wheelB, and for this purpose the shaft F of the grinding-wheel is providedwith a pulley L, connected by a belt L with a pulley L on the rod E, andon the face of the pulley L is secured a second pulley L con nee-ted bya belt L with a pulley L held on a pulley L journaled in an auxiliaryframe D mounted to swing from the shaft or rod E as the fulcrum. On theshaft L is secured another pulley L somewhat larger-than the pulley Land in contact with the peripheral surface of the wheel 8, so that whenthe band-saw mill is set in motion and the wheels B B are rotated thenthe rotary motion of the latter causes the pulley L to rotate, wherebythe shaft L is turned and the rotary motion of this shaft is transmittedby the pulley L belt L pulley L pulley L belt L, and pulley L to thegrinding-wheel shaft F to cause the grinding-wheel G to rotate.

From the foregoing it is understood that the band-saw mill furnishes thenecessary power for driving the grinding-machine, and the frame Dthereof is supported from the frame of the grinding-mill, and the framecan be readily adjusted so as to bring the grinding-wheel G either incontact with the face of the band-saw wheel B or the face of theband-saw wheel B. By the operator turning the crank-arm I thegrinding-wheel G is moved lengthwise of the shaft F and at the same timerotates with the latter, so that the face of the band -saw wheel istrued accurately and in a very short time.

Having thus fully described my invention, Iclaim as new and desire tosecure byLetters Patent 1. A grinding-machine, comprisinga frame mountedto swing, a grinding-wheel shaft journaled in the free end of saidframe, a grinding-wheel mounted to turn with and to slide on saidgrinding-wheel shaft, a feeding device for engaging said grinding-wheeland carried by said frame, to move the grindingwheel longitudinally onits shaft and transversely of the band-saw wheel to be trued, and asupport for the free end of said frame, and comprising a fixed rod, andscrew-rods mounted to swing on the rod, and engaging said frame, andnuts on the screw-rods securing the frame in position on the screw-rods,as set forth.

2. A grinding-machine, comprisingaframe mounted to swing, agrinding-wheel shaft journaled in the free end of said frame, agrinding-wheel mounted to turn with and to slide transversely on saidgrinding-wheel shaft, a feeding device for engaging said grinding-wheeland carried by said frame, to move the grinding-wheel longitudinally onits shaft and transversely of the band-saw wheel to be trued, saidfeeding device comprising a shifting collar on the grindingwheel, ashifting arm engaging said shifting collar and having a nut, and ascrew-rod mounted to turn in said frame and engaging said nut of theshifting arm, as set forth.

3. The combination with band-saw wheels, of a swinging grinding-wheelmounted between the band-wheels to swing into engagement with either ofsaid wheels, and means for operating the grinding-wheel from one of theband-saw wheels, substantially as described.

at. The combination with band-saw wheels,

of a swinging frame mounted between the band-wheels, a grinding-wheelmounted in the free end of the frame, a feed device for feeding thegrinding wheel transversely, means for locking the frame in position tohold the grinding-wheel in engagement with either band'wheel, and meansfor operating the grinding-wheel from one of the band-saw wheels,substantially as described.

5. The combination with band-saw wheels,

of a swinging frame mounted between the band-wheels, a grinding-wheelmounted in the free end of the frame, means for locking the frame inposition to hold the grindingwheel in engagement with either band-wheel,a second swinging frame, a pulley or roller mounted in the free end ofsaid second frame and engaging one of the band-wheels, and means foroperating the grinding-wheel from the pulley, substantially asdescribed.

6. The combination with band-saw wheels, of a swinging frame mountedbetween the band-wheels, a grinding-wheel mounted in the free end of theframe, a feed device for feeding the grinding wheel transversely, meansfor locking the frame in position to hold the grinding-wheel inengagement with either bandwheel, a second swinging frame, a pulley orroller mounted in the free end of the second frame and engaging one ofthe band-wheels, and gearing between the pulley or roller and thegrinding-wheel, substantially as described.

7. A grindingmachine, comprising two oppositely extending swingingframes, a grinding-wheel mounted in one frame, a pulley or rollermounted in the other frame, gearing between the grinding-wheel andpulley or roller, whereby the former is operated from the latter, and anadjusting device for the frame carrying the grinding-wheel,substantially as described.

8. A grinding-machine, comprising two oppositely extending swingingframes, at grinding-wheel mounted in the free end of one frame,a feeddevice for feeding the grinding-wheel transversely, means for adjustingthe frame carrying the grinding-wheel, a pulley mounted in the free endof the other frame, and means for operating the grindingwheel from thepulley, substantially as described.

9. In agrinding-machine, the combination with a swinging frame, and agrinding Wheel mounted therein, of screw-rods having their upper endsloosely mounted on supports and their lower ends projecting through acrossbar of the said frame, and nuts on the screwrods, substantially asdescribed.

10. In a grinding-machine, the combination with a shaft or rod, a framepivotally mounted on the shaft or rod, a grindingwheel mounted in thefree end of the frame, a pulley on the shaft of the grinding-wheel,means for adjusting the frame, a second frame mounted on the said shaftor rod, pulleys mounted in the free end of the second frame, pulleys onthe rod, and belts passing aroundthe said pulleys, substantially asdescribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

FRED A. NYSTROM.

Witnesses:

W. R. MACFARLANE, LEWIS M. ROSER.

IIO

